Fluid-pressure-operating mechanism.



0. E. CLARK. FLUiD PRESSLRE OPERATING MECHANISNI. APPLmATloN man APR.24. 1915.

1 ,l 83,275 i Patented May 16, 1916.

"To all/whom, 'it may Concern.:

Improvements in Fluidd .Mechanisim of which dolthrock d1' V"providedfor cllfect-iiig the rotation ot the One ot tion is to `provide simple mechanism ot an a antoniatic` character that ,UNXTED STATESPATENT FFCE- OMAR E. CLARK. or DENVER. common.

Assrnon TOT'HDENVER ROCK 'DRILL MANUFACTURNG CGMPANY, 'OF DENVER; CQLORADO. ,A CORPORATION (31;1

DELAWARE.

' appiicaoon ined Apro 24.

Crank. a residing at Be yit known that i. Ouaioi". `citizen ot the United States Uen`\er.. iu the -county ot' Denver and State oiI Colorado. have ini-entcd new and u'set'ul ressure-Operating the followiugis a specification.

'lhe present invention relates more particularly to means tor lubricating puenniatictools 'and the like. and more especially tlioseemployed in rock drills. ln that type. ills wherein automatic means is,

dillicu-lty has been experieneed` inlubricatingthe rotatingr mech-- ism which as is well known is ordinarily placed Vat the trout end ot' the cylinder member.

drill bit. considerable the object-sot the present invendepends for operation or rise and" fall Vin the to the actuation `ot`` the results inj the vapo'- tion on 'the pulsa fiiud pressure -due motor. and furthermoreriZat-ioirof the lubricant. and its even .distri-v bution to all the working partsfand particulaily'theV rotating mechanism.. (lneV en'ibodihient ot' the. inventi trated d in the accompanying on is illusdra wings,

`member is -employed includingT a body or barrel 5f, and a rear head Operating in' the barrel `is a reciprocatory piston 6 hav-A ingr an internal constant pressure chamber V.i arranged to receive a supply 'of fluid cleansing the drill hole..

ire1 \\'hi ch is distributed for tho actuatin5 r the piston and for To this end, ports under pressi purpose of 8. lead from the constant pressure: chamber d through tho piston with suitable. channels" walls` and cooperate and ports n i the. cylinder tor distributing the. fluid to opposite.

ends of the piston toithe purpose ol actuat- Specication of Letters Patent.

same, as

-their constant and rapid mlotion. means gained by a rLUn-rREssURE-OPERATING MECHANISM.

A Patented May 16, 1916.

1915. SerialNo.23.636 Y ini; the saine..v passageway or conduit t) extends'l'rom the constant pressure chamber T 'longitudinally through vthe Areduced ton ward portion l0`ot' the pistonthat opens through its' iront end, being! alined `with the bore 11 formed inthe-drilllbit 12.- Thusl a portion' ot'- the, fluid iuiderpressure will enter thebore llof the drillbit. and Consequently be directed tothe bottoni of thedrillihole'. d Y,

` In the pres-ent embodiment,` `the ehuek lI in which thedrill .bit 12 'isfplacedt is rotatable and its rotation is automatically ef` fected trom' the'piston b.\"`suitableI ratchet mechanism. shown x fenerally and designated This mechanism is' substantially thel cation. Serial. Nin-5875.165. filed Dec.' 4'. 1911, and it isbelieved requires no particular'ilescription. inasmuch 'as thisrotating meehauism is located 'at somedistanee'trom the,` body ot' theftool and is quite isolated, and furthermore keep the partis' -w Of is ell' lubricated'. in `riew employed t'or -etl'eeting the lubrication the rotating mechanism and chuck, as as the piston and othenpart's." To this end. there is interposed between the barrel -L and rear head a lubricant reservoindesignated rencrally 15. said`ieservoir having` inner and outer end walls 16 and 17. an outer tubular wall 1S and an inner tubular wall -lsl thereby formingr an` inclosed lubricant holdingr chamber 20, to which access cairbe filling port 21. closed by a removable plug 22. Motive {iu'id from any suitable souree, is supplied to the tool b v a conduit (not shown) which is,adapted to be connected to a couplingr 23 secured to the rear head 5. and` extending from the rear head through the innertubula'r the. constant pressure .chamber 7 of the piston. is a supply tube 2J; that4 delivers the liuid to the said constant pressure, chamber.

- The inner .tubi'ilar wall 19 of the reservoir ista'pered 'in character. its rear portion be- ,inll thicker than its front portion. and

`tor-med therein is. a passageway 25 opening.

also .communicating '2T formed in thewall 19 around the` the the chamber 2() and with an annular groove iunei` tace of the tubular tulle 24. A port 2S,` opening through tube 2l, at'ords communication between that shown in my copendingapphinasmuch as it is necessary to well l wall 19 into Vas'slrown at 2,6. into the outer portion ot 105 material 32.

i groove 27 and the bore of said tube. A wick or screen 29 is preferably placed in the pasf sagen'ai-'i being held in place by a plug '30. In `the diametrically opposite portion i of the inner tubularwall 19 of the reservoir `isthreaded a conduit 3l which extends through .said wall into the outer portion of the chamber 20. The projecting portion of this conduit is filledrwitli wicking or screen The sai'd conduit thush-A has coniii'iunication 'with the outer portion of thechainber and opens through the rear "bythe rapid forward and backward move. `meiit of the hammerV ]`iiston. This :rise and fall of pressure canses'a pulsation ofthe '25- ;in rearof the saine.

portion of the wall 19,' where it is in commu- ,nicatony with a port 33 formed inthe tube -24on the opposite side vto tljeport 28 and,

The `principle upon which the lubricator worksis the rise and fall in theifluid pres- Sure in the constant pressure chamber 7 and v,the supply' conduit immediately adjacent* there'todi1"e to the consumption ofthe flu-id' fluid through the two `channels of commufnication' between the tube 24 and th'e hibricant reservoir chamber'QO. The pulsation i '".ofthe fluid'into and out of the reservoir l vthrough the channels tends to' vaporize the 430 oil and ltakes it out inthe form of. vapor l"whichfurnishes a. uniform supply of oil to `every partlof the drill.- -The rotating mechanisxri `is `as .thoroughly lubricated asis the piston,` which isnot the case ifoil is intro i duced into the -machine in liquid forin. l ur- Tthermore, withthe arrangement of the said channels of communication, it is not possible :to submergethe outer endsof. the channels y `simultaneously as one or, the other will be 40 bove the oillevel according to the position ofthe-drill. This arrangement is necessary' ,for the reason that if both openings-'26 'and 33 aresimultaneously submerged `when the motive fluid is turned ofi of the drill'and thc pressure therein falls to atmospheric presl sure, the lubricant would'be forced out of the chamber by they fluid expanding therein y. down to said atmospheric pressure. By having one of the outlets always above the level,

` the expanding fluid can escape therethrough `and `Willnot drive the llubricant out.

@Fromthe foregoing, it `is thought that the construction,' operation' and many `advanf 1 ingesnf aie herein described invention wailili` ,bea parent to those skilled in the art, With- `out urtlier description, and it will be under- ',stood that various changes in the size, shape, i -,proportionandminor details of construction so" Y fte s of the invention.`

`may `be resorted Cto Without departing from the spirit or sacrificing any of the advan- :Wing-thus full-y described iny invention,

what Iclaim as new, and `desire to secure by Letters Patent, is

1. Inepp'aratus of the character set forth,

the combination with a c vliiider member and a piston operating therein. said cylinder member including :i bai-rel and a rearhead,

of a lubricant rcservoirclainped between the barrel Aand rear head and having a lubricant holding chamber, means for delivering ino tive fluid through the chamber to the cyliii# der member, and n'ieans for delivering lubricant to the delivering means.

d. In apparatus oi' the character set forth,

the combination with a' cylinder ineii'ibei" and a piston operating therein, said cylinder ineii'iber including a barrel and aI rear head,

'of a lubricant reservoir clamped between the barrel and rear head, a supply tube for fluid under pressure extending through the lubricant reservoir and having a slidable engagementwith the piston, and means for supplyinglubricant `from the reservoir to the tube; i, v 3. In apparatus of the character set forth,

member including a barrel and a rear head,

of', a lubricant reservoir clamped between the bai-rel and the rear head, a supply 'tube for fiuid under pressure extending. through the conibinationwith acylinder.member and a piston operating' therein, said cylinder the `lubricant reservoir and having a slidablef.

engagementu-'ith the piston, and conduits from the reservoir communicating with the tube at different points longitudinally along' the saine.

nl. ln apparatusof the character setfoi'th, the combination with a cylinder member and a piston operating therein, 'said cylinder member includingr a barrel and a i'eai' head, of a lubricant i'eseifvoiuclamped'betwecntho barrel and rear head. a supply tube -for fluid under pressure extending through the lubrirant reservoir and having a slidablel engagement with the piston. and conduits couununicuting with the reservoir at ditl'cientpoints and with the tube atdillerent points longitudinally along the saine.

, ln ai'ipai'atusA ofthe. character net forth, the combination with ,a ffif'lindei' uieniberaud a piston operatingtherein and having a con- Vduit extending therethrough' and opening through its front end for the conveyance of a. cleansing fluid to a. drill bit operated on by the piston ol2 a rotatable drill lu'ildng -chuck associated with said front endfand means for delivering lubricant to said conduit to be conveyed b v the cleansing fluid A.

to the chuck. g (l. Tn apparatus of the character set `forth,

the coinliinationwith a cyliudeigmemlier and iso l rotation of the latter from the former, and means for 'delivering lubricant to said conduit and causing it to be vaporized and conveyed in Vaporiued condition by the cleans-` ing fluid to the chuck and rotating means.

7.- In apparatus of the character set forth, the combination with a cylinder member and a piston operating therein, said piston having an internal constant pressure chamber, means for distributing the cylinder member to operate the piston,

-' and a passageway leading through the' front a piston operating therein, of a lubricantA reservoir having a lubricant holding chamber, means for supplyingfiuid under pressure to the cylinder member to actuate the piston, and means for of lubricant from the chamber to the cylinder member, said means including passageways communicating with the fluid supply means 'at different points and with the outer portion of the lubricant holding chamber at different points.

9. In apparatus of the character set forth. the combination with a cylinder member and a piston operating therein, said cylinder member including a barrel and a rear head, of a lubricant reservoir linterposed between the barrel and head, a supply tub'e for fluid under pressure passing through the reservoir and slidably entering the piston, and passageways leading from the reservoir into the tube.

10. In apparatus of the character set causing the delivery forth, the combination with a cylindermemmg inner and outer tubular Walls,

fluid therefrom to ber and 'a piston operating therein, said cylinder member including a,barrel and a rear head, of a lubricantreservoir interposed between the barrel and head and havtube for fluid under pressure passing" throughrthe inner tubular wall into the cylinder member, and passageways leading; from the reservoir into` the tube.

. l1. forth, the combination with a cylinder member and a piston Voperating therein, said cylinder member including a barrel and a rear head, of a lubricant reservoir interposed between the barrel and the head and having 60 inner and. outer tubular walls, Aa supply tube for fluid under pressure vpassing through the inner tubular wall into the cylinder member, and passageways leading from the reservoir into the tube. said passageways communicating with the tube at different points longitudinally thereof.

12. In apparatus of the character set forth, the combination with a cylinder member including a piston operatingin the cylinder member and having an internal constant pressure chamber. a ,lubricant reservoir interposedl between the barrel and rear head and havmg inner and outer walls. a supply tube for fluid under pressure extending through the inner wall into the constant pressure chamber of the piston. and passageways communicating with the tube at different points longitudinally of the same and cominunieating with opposite outer portions of the lubricant reservoir.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

` VOMAR E. CLARK.

Witnesses:

WILLIAM H. LuoNAun, .Inseln TURNER.

a supply 50 In apparatus of the character Set 55 a barrel and a r'ear head, and 70 

